Modulating Boilers - Laars
VARI-PRIMETM Installation Kit
Document 7025B
VARI-PRIMETM Installation Kit for
NEOTHERM LC ®
Modulating Boilers Model NTH. Sizes 1000-1700 MBTU/h FOR YOUR SAFETY: This procedure must be performed by a professional service technician, qualified in hot water boiler installation. Improper connections could create an electrical hazard, which could cause serious injury, property damage, or death. VARI-PRIME : A variable pump control that, when used with a variable speed pump, maintains a user-chosen temperature rise between the inlet and outlet of the boiler. TM
GENERAL PCB OPERATION: 1. The desired Delta T can be set to any of the following values by moving or adding jumpers to the (JP2) terminal on the control: See Figure 2. 15 deg F/8 deg C 20 deg F/10 deg C 25 deg F/13 deg C 30 deg F/ 16 deg C By adding a second jumper, one on “15 deg F” and one on “20 deg F”, it is possible to achieve 35 deg F /19 deg C. By adding a second jumper, one on “15 deg F” and one on “25 deg F”, it is possible to achieve 40 deg F/22 deg C. 2. As shipped, the VARI-PRIME has a jumper on the (JP4) terminal, to operate a 0-10 VDC output. If a 4-20 mA output is needed, move the jumper to the (JP5) terminal. 3. VARI-PRIME can operate in °F or °C. A jumper on the (JP1) terminal has set the default to °F. Remove that jumper for °C. 4 If Main Gas valve is “OFF” AND a call for heat is “TRUE” then the PCB overrides the PID control and runs the pump output at 100% (10 VDC, or 20 mA). 5. Once the Main Gas valve is energized the PCB will maintain pump output at 100% for 60 seconds to allow the system to stabilize. Once the 60 second timer has expired, the PCB will then run the pump output speed based on the jumper setpoint. 6. When “T-T” is satisfied, the PCB will run pump at 100% output for the duration of the pump overrun time. 7. The VARI-PRIME PCB has a low end cap to prevent nuisance low flow trips. The cap is factory programmed to 2 VDC. 8. Factory settings are: Degrees - Fahrenheit Output Signal - 0 -10VDC
INSTALLATION INSTRUCTIONS
H2352500B
P.I.D. CONTROL ADJUSTMENT: With Variable Speed Pumping, the boiler control P.I.D. needs to be adjusted. • These settings are found in your NeoTherm controls under: Advanced Setup>CH Config>CH Config It is recommended to start with: P = 20 I =15 D = Factory set-point Depending on pump sizing and application requirements; these P.I.D. settings may need to be used to fine-tune boiler performance. • Once you have adjusted the P.I.D. contols, then disconnect power source from boiler. • Remove front panels from boiler. • Pull the sliding panel control straight outward, as shown.
Photo 1
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 800.900.9276 • Fax 800.559.1583 (Customer Advisors) Headquarters: 20 Industrial Way, Rochester, NHService, 03867 Service • 603.335.6300 • Fax 603.335.3355 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 (Applications Engineering) 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 1 of 6
• Mount the Vari-Prime control box at the top left corner of the control panel as shown in Photo 1 and Figure 1. Pre-drilled holes mark the mounting location.
Pre-drilled holes
Figure 1
Power Connections:
1000 MBTU/h
and
1700 MBTU/h
• Connect the Blue wire anywhere on the 24V+ boiler Terminal Block (TB3).
H2352500B
• Connect the Yellow wire anywhere on the 24V Neutral boiler Terminal Block (TB4).
Photo 2
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 2 of 6
1000 MBTU/h • Connect the White wire to the boiler pump connections on boiler Terminal Block (TB5) across from the other white wire at location 4A.
8
7
6
5
4
3
2
1
8
7
6
5
4
• Connect the Black wire to the other boiler pump connection on boiler Terminal Block (TB5) at location 3A.
Photo 3
1700 MBTU/h All NeoTherm LC 1700 units include a dry contact that requires an alternate power source. • Land the field 120V supply onto the #4A boiler pump connection on the boiler terminal block (TB5). • Connect the Black Vari-Prime wire to the other boiler pump connection on boiler Terminal Block (TB5) at location 3A. • Connect the white VARI-PRIME wire, the field 120V supply neutral wire, and the customer supplied 120VAC pump relay neutral wires all together. (See wiring diagram on last page).
3
2
1
Photo 4
1000 MBTU/h
H2352500B
• Locate the Brown wire coming from the top gas valve. Trace the wire to the spade connection with the Blue/White wire. Unplug the connectors and insert the Blue wire and connectors from the Vari-Prime unit. • Locate the Brown wire coming from the bottom gas valve. Trace the wire to the spade connection with the Blue/White wire. Unplug the connectors and insert the Blue/Red wire and connectors from the Vari-Prime unit.
Photo 5
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 3 of 6
1700 MBTU/h • Locate the Blue and Black wires coming from the top gas valve. Trace the wires to the spade connection with the blue/white wire. Unplug the connectors and insert the blue wire and connectors from the Vari-Prime unit. • Locate the Blue and Black wires coming from the bottom gas valve. Trace thse wires to the spade connection with the Blue/White wire. Unplug the connectors and insert the Blue/Red wire and connectors from the Vari-Prime unit.
Photo 6
1000 MBTU/h
and
1700 MBTU/h
Field Connections: • Remove Vari-Prime Cover. • Remove the Vari-Prime control box from the packaging and familiarize yourself with each connection point.
TB2 TB5 TB4
4 3 2 1
4 3 2 1
+24V -24V
JP3 JP1 7&8 = F 1&2 = SPARE JUMPER
4-20MA(-) 0-10VDC(+) 0-10VDC(-)
JP5
1 2 3
JP4 TB6
2 4 6 8
Figure 2
2 4 6 8
Jumpers
1 3 5 7
TB1
1 2 3 4 1 3 5 7
PCB DIGITIZED P/N E2345200
4-20MA(+)
TB3
4 3 2 1
R14 C12 R13 C11
LED1
Terminal Blocks
N/O COM N/C
JP2 1&2 = (Delta T) 15 DEG F / 8 DEG C 3&4 = (Delta T) 20 DEG F / 10 DEG C 5&6 = (Delta T) 25 DEG F / 13 DEG C 7&8 = (Delta T) 30 DEG F / 16 DEG C
H2352500B
10K OUTLET SENSOR 10K INLET SENSOR
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 4 of 6
1000 MBTU/h
and
1700 MBTU/h
Field Connections: (continued) • Using the two (2) supplied thermistor cables, connect one Shielded cable to the 1 and 2 landing points on terminal block (TB2) of the Vari-Prime board. Important: This wire will be run to the OUTLET sensor. • Connect the other Shielded cable to the 3 and 4 landing points on terminal block (TB2) of the Vari-Prime board. Important: This wire will be run to the INLET sensor.
• Connect one end of the VFD signal wire to the VFD on the chosen pump as instructed in pump manual. Connect the other end to the 3 and 4 landing points on terminal block (TB3). Important: #3 landing point is for 0-10 VDC (+) and #4 is for 0-10 VDC(-).
H2352500B
• Tap two ¼” NPT threaded holes into water pipes for the sensors. One in the supply pipe and the other in the return. Both sensors need to be inserted into the pipe no more than 12” away from the outside of the boiler jacket. These two sensors will be the Delta T. (Note: Delta T is the difference between supply and return water temperatures) The amount of Delta T is chosen on Vari-Prime terminal block (JP2). Install the Sensors.
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 5 of 6
C
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
B
pg 6 of 6
A
TB2
FLOaTING TermINaL BLOCK ITem e2346400 ON Ca0099
See NOTe 4
#2
#3
F
BL
BL #10
THermISTOr
543 2 1
NN NN N
YeL #7
BL/r #13
F
m BL/r #12
BL/W
USe HeaT SHrINK TUBe (PrOVIDeD) TO PrOTeCT WIreS Here 2X
m
4 3 2 1 24VaC TB2 POWer TB1 (-) (+) LeD1 1 2
DeTaIL C TYPICaL THermISTOr CONNeCTION
FemaLe PINS 39-000039
mOLeX CONNeCTOr
See NOTe 4
1/4" NPT
BL #11
BK
PrImarY GaS VaLVe
PrImarY GaS VaLVe
OUTLeT TemP SeNSOr 10K THermISTOr
BLUe 1/4" Fem
BL
Y #4
reD 1/4" maLe
Y #5
F
TB3 4-20ma(+) 1
Y #6
BL #11
Br
BLUe 1/4" Fem
N/O 1
CrImP SPLICe
E23450
Y #4 Y #6 Y #5 BL/WH #1 YeL #8
P/N LaarS-e2345000 COm 2 (OPTIONaL) N/C 3 PCB eNCLOSUre TB6
BL #10
m
BL/W
F
m BL/r #12
BLUe 1/4" Fem
8
NeU
BLr BLr BLr TB3 TB5-3 TB5-4
7
1 3 5
Cr1
F BL #11
BL #10
m
BL/r #13
F
m
BL/r #12
CONFIGUraTION
DeTaIL C TYPICaL SINGLe BUrNer BOILer
5
VarI PrIme
G
W
BK
Y
BL/W
VarI PrIme
W
BK
W
BK
DeTaIL e TYPICaL LaarS 220/240VaC POWereD BOILer PUmP
TO CUSTOmer 120VaC { PUmP reLaY
FIeLD WIreD
24V NEUTRAL
24V+
DeTaIL D TYPICaL LaarS 120VaC POWereD BOILer PUmP
BOILer PUmP
FIeLD WIreD
Y
BL/W
DeTaIL F
FIeLD 120V SUPPLY
CUSTOmer SUPPLIeD 120 VaC PUmP reLaY W
HOT
NEUTRAL
W
1 2 3 4 5 6 7 8
B
a
1 2 3 4 5 6 7 8
B
BOILer TB5
a
BOILer TB5
1 2 3 4 5 6 7 8
B
3
FOr 220/240VaC VFD PUmPS THe CUSTOmer WILL USe LaarS 120VaC FrOm BOILer TB5-3&4 TO eNerGIZe a COIL ON CUSTOmer reLaY TO CLOSe CONTaCTS FOr 220/240VaC SUPPLIeD BY CUSTOmer
FOr 120VaC VFD PUmPS THe CUSTOmer WILL WIre DIreCTLY TO BOILer TB5-3&4 aS Per INSTrUCTIONS NOTeD IN maNUaL
a
BOILer TB5
BK
VarI PrIme
NeOTHerm 1700 mBTU/H UNITS
4
NeOTHerm 1000 mBTU/H UNITS
reD 1/4" maLe
24V NEUTRAL
24V+
NeOTHerm NT 285-850
See DeTaIL D Or DeTaIL e
FIeLD WIre #14
(CUSTOmer) BOILer PUmP
reD 1/4" maLe
NeU +24VaC +120
BLr TB4
DK BLU/YeL
0-10VDC/ 4-20ma
aNaLOG INPUT
VFD (CUSTOmer)
BL/r #13
Br
BL/W
DeTaIL B TYPICaL TWO BUrNer BOILer CONFIGUraTION
6
NeOTHerm NT 1000
4 3 2 1 4 3 2 1 4-20ma(-) 2 TB5 TB4 0-10V (+) 3 PCB 0-10V (-) 4 DIJITIZeD
DK BL/YeL #9
TO PCB TB4-4
INLeT TemP SeNSOr 10K THermISTOr
2NDarY 2NDarY GaS VaLVe GaS VaLVe
TO PCB TB4-2
BK
PrImarY GaS VaLVe BL #11
BL/W
SeCONDarY GaS VaLVe
DeTaIL a TYPICaL TWO BUrNer BOILer CONFIGUraTION
HONeYWeLL J5-2 (PrI)
Bl/r #13
PrImarY GaS VaLVe
NeOTHerm NT 1700
HONeYWeLL J5-2 (SeC)
PrImarY GaS VaLVe TO PCB TB4-4
2NDarY 2NDarY GaS VaLVe GaS VaLVe TO PCB TB4-2
D
www.Laars.com PCB TB1-2 (+24V)
GaS VaLVe
7
TO PCB TB4-4
8
TO PCB TB4-2
THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN ARE PROPRIETARY TO LAARS HEATING SYSTEMS CO. AND SHALL NOT BE REPRODUCED, TRANSFERRED TO OTHER DOCUMENTS, USED OR DISCLOSED TO OTHERS FOR MANUFACTURING OR ANY OTHER PURPOSE EXCEPT AS SPECIFICALLY AUTHORIZED IN WRITING BY LAARS HEATING SYSTEMS CO.
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
5.
4.
3.
2.
1.
N
Document 7025B
VARI-PRIMETM Installation Kit for
NEOTHERM LC ®
Modulating Boilers Model NTH. Sizes 1000-1700 MBTU/h FOR YOUR SAFETY: This procedure must be performed by a professional service technician, qualified in hot water boiler installation. Improper connections could create an electrical hazard, which could cause serious injury, property damage, or death. VARI-PRIME : A variable pump control that, when used with a variable speed pump, maintains a user-chosen temperature rise between the inlet and outlet of the boiler. TM
GENERAL PCB OPERATION: 1. The desired Delta T can be set to any of the following values by moving or adding jumpers to the (JP2) terminal on the control: See Figure 2. 15 deg F/8 deg C 20 deg F/10 deg C 25 deg F/13 deg C 30 deg F/ 16 deg C By adding a second jumper, one on “15 deg F” and one on “20 deg F”, it is possible to achieve 35 deg F /19 deg C. By adding a second jumper, one on “15 deg F” and one on “25 deg F”, it is possible to achieve 40 deg F/22 deg C. 2. As shipped, the VARI-PRIME has a jumper on the (JP4) terminal, to operate a 0-10 VDC output. If a 4-20 mA output is needed, move the jumper to the (JP5) terminal. 3. VARI-PRIME can operate in °F or °C. A jumper on the (JP1) terminal has set the default to °F. Remove that jumper for °C. 4 If Main Gas valve is “OFF” AND a call for heat is “TRUE” then the PCB overrides the PID control and runs the pump output at 100% (10 VDC, or 20 mA). 5. Once the Main Gas valve is energized the PCB will maintain pump output at 100% for 60 seconds to allow the system to stabilize. Once the 60 second timer has expired, the PCB will then run the pump output speed based on the jumper setpoint. 6. When “T-T” is satisfied, the PCB will run pump at 100% output for the duration of the pump overrun time. 7. The VARI-PRIME PCB has a low end cap to prevent nuisance low flow trips. The cap is factory programmed to 2 VDC. 8. Factory settings are: Degrees - Fahrenheit Output Signal - 0 -10VDC
INSTALLATION INSTRUCTIONS
H2352500B
P.I.D. CONTROL ADJUSTMENT: With Variable Speed Pumping, the boiler control P.I.D. needs to be adjusted. • These settings are found in your NeoTherm controls under: Advanced Setup>CH Config>CH Config It is recommended to start with: P = 20 I =15 D = Factory set-point Depending on pump sizing and application requirements; these P.I.D. settings may need to be used to fine-tune boiler performance. • Once you have adjusted the P.I.D. contols, then disconnect power source from boiler. • Remove front panels from boiler. • Pull the sliding panel control straight outward, as shown.
Photo 1
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 800.900.9276 • Fax 800.559.1583 (Customer Advisors) Headquarters: 20 Industrial Way, Rochester, NHService, 03867 Service • 603.335.6300 • Fax 603.335.3355 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 (Applications Engineering) 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 1 of 6
• Mount the Vari-Prime control box at the top left corner of the control panel as shown in Photo 1 and Figure 1. Pre-drilled holes mark the mounting location.
Pre-drilled holes
Figure 1
Power Connections:
1000 MBTU/h
and
1700 MBTU/h
• Connect the Blue wire anywhere on the 24V+ boiler Terminal Block (TB3).
H2352500B
• Connect the Yellow wire anywhere on the 24V Neutral boiler Terminal Block (TB4).
Photo 2
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 2 of 6
1000 MBTU/h • Connect the White wire to the boiler pump connections on boiler Terminal Block (TB5) across from the other white wire at location 4A.
8
7
6
5
4
3
2
1
8
7
6
5
4
• Connect the Black wire to the other boiler pump connection on boiler Terminal Block (TB5) at location 3A.
Photo 3
1700 MBTU/h All NeoTherm LC 1700 units include a dry contact that requires an alternate power source. • Land the field 120V supply onto the #4A boiler pump connection on the boiler terminal block (TB5). • Connect the Black Vari-Prime wire to the other boiler pump connection on boiler Terminal Block (TB5) at location 3A. • Connect the white VARI-PRIME wire, the field 120V supply neutral wire, and the customer supplied 120VAC pump relay neutral wires all together. (See wiring diagram on last page).
3
2
1
Photo 4
1000 MBTU/h
H2352500B
• Locate the Brown wire coming from the top gas valve. Trace the wire to the spade connection with the Blue/White wire. Unplug the connectors and insert the Blue wire and connectors from the Vari-Prime unit. • Locate the Brown wire coming from the bottom gas valve. Trace the wire to the spade connection with the Blue/White wire. Unplug the connectors and insert the Blue/Red wire and connectors from the Vari-Prime unit.
Photo 5
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 3 of 6
1700 MBTU/h • Locate the Blue and Black wires coming from the top gas valve. Trace the wires to the spade connection with the blue/white wire. Unplug the connectors and insert the blue wire and connectors from the Vari-Prime unit. • Locate the Blue and Black wires coming from the bottom gas valve. Trace thse wires to the spade connection with the Blue/White wire. Unplug the connectors and insert the Blue/Red wire and connectors from the Vari-Prime unit.
Photo 6
1000 MBTU/h
and
1700 MBTU/h
Field Connections: • Remove Vari-Prime Cover. • Remove the Vari-Prime control box from the packaging and familiarize yourself with each connection point.
TB2 TB5 TB4
4 3 2 1
4 3 2 1
+24V -24V
JP3 JP1 7&8 = F 1&2 = SPARE JUMPER
4-20MA(-) 0-10VDC(+) 0-10VDC(-)
JP5
1 2 3
JP4 TB6
2 4 6 8
Figure 2
2 4 6 8
Jumpers
1 3 5 7
TB1
1 2 3 4 1 3 5 7
PCB DIGITIZED P/N E2345200
4-20MA(+)
TB3
4 3 2 1
R14 C12 R13 C11
LED1
Terminal Blocks
N/O COM N/C
JP2 1&2 = (Delta T) 15 DEG F / 8 DEG C 3&4 = (Delta T) 20 DEG F / 10 DEG C 5&6 = (Delta T) 25 DEG F / 13 DEG C 7&8 = (Delta T) 30 DEG F / 16 DEG C
H2352500B
10K OUTLET SENSOR 10K INLET SENSOR
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 4 of 6
1000 MBTU/h
and
1700 MBTU/h
Field Connections: (continued) • Using the two (2) supplied thermistor cables, connect one Shielded cable to the 1 and 2 landing points on terminal block (TB2) of the Vari-Prime board. Important: This wire will be run to the OUTLET sensor. • Connect the other Shielded cable to the 3 and 4 landing points on terminal block (TB2) of the Vari-Prime board. Important: This wire will be run to the INLET sensor.
• Connect one end of the VFD signal wire to the VFD on the chosen pump as instructed in pump manual. Connect the other end to the 3 and 4 landing points on terminal block (TB3). Important: #3 landing point is for 0-10 VDC (+) and #4 is for 0-10 VDC(-).
H2352500B
• Tap two ¼” NPT threaded holes into water pipes for the sensors. One in the supply pipe and the other in the return. Both sensors need to be inserted into the pipe no more than 12” away from the outside of the boiler jacket. These two sensors will be the Delta T. (Note: Delta T is the difference between supply and return water temperatures) The amount of Delta T is chosen on Vari-Prime terminal block (JP2). Install the Sensors.
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
pg 5 of 6
C
Litho in U.S.A. © Laars Heating Systems 1404 Document 7025B
B
pg 6 of 6
A
TB2
FLOaTING TermINaL BLOCK ITem e2346400 ON Ca0099
See NOTe 4
#2
#3
F
BL
BL #10
THermISTOr
543 2 1
NN NN N
YeL #7
BL/r #13
F
m BL/r #12
BL/W
USe HeaT SHrINK TUBe (PrOVIDeD) TO PrOTeCT WIreS Here 2X
m
4 3 2 1 24VaC TB2 POWer TB1 (-) (+) LeD1 1 2
DeTaIL C TYPICaL THermISTOr CONNeCTION
FemaLe PINS 39-000039
mOLeX CONNeCTOr
See NOTe 4
1/4" NPT
BL #11
BK
PrImarY GaS VaLVe
PrImarY GaS VaLVe
OUTLeT TemP SeNSOr 10K THermISTOr
BLUe 1/4" Fem
BL
Y #4
reD 1/4" maLe
Y #5
F
TB3 4-20ma(+) 1
Y #6
BL #11
Br
BLUe 1/4" Fem
N/O 1
CrImP SPLICe
E23450
Y #4 Y #6 Y #5 BL/WH #1 YeL #8
P/N LaarS-e2345000 COm 2 (OPTIONaL) N/C 3 PCB eNCLOSUre TB6
BL #10
m
BL/W
F
m BL/r #12
BLUe 1/4" Fem
8
NeU
BLr BLr BLr TB3 TB5-3 TB5-4
7
1 3 5
Cr1
F BL #11
BL #10
m
BL/r #13
F
m
BL/r #12
CONFIGUraTION
DeTaIL C TYPICaL SINGLe BUrNer BOILer
5
VarI PrIme
G
W
BK
Y
BL/W
VarI PrIme
W
BK
W
BK
DeTaIL e TYPICaL LaarS 220/240VaC POWereD BOILer PUmP
TO CUSTOmer 120VaC { PUmP reLaY
FIeLD WIreD
24V NEUTRAL
24V+
DeTaIL D TYPICaL LaarS 120VaC POWereD BOILer PUmP
BOILer PUmP
FIeLD WIreD
Y
BL/W
DeTaIL F
FIeLD 120V SUPPLY
CUSTOmer SUPPLIeD 120 VaC PUmP reLaY W
HOT
NEUTRAL
W
1 2 3 4 5 6 7 8
B
a
1 2 3 4 5 6 7 8
B
BOILer TB5
a
BOILer TB5
1 2 3 4 5 6 7 8
B
3
FOr 220/240VaC VFD PUmPS THe CUSTOmer WILL USe LaarS 120VaC FrOm BOILer TB5-3&4 TO eNerGIZe a COIL ON CUSTOmer reLaY TO CLOSe CONTaCTS FOr 220/240VaC SUPPLIeD BY CUSTOmer
FOr 120VaC VFD PUmPS THe CUSTOmer WILL WIre DIreCTLY TO BOILer TB5-3&4 aS Per INSTrUCTIONS NOTeD IN maNUaL
a
BOILer TB5
BK
VarI PrIme
NeOTHerm 1700 mBTU/H UNITS
4
NeOTHerm 1000 mBTU/H UNITS
reD 1/4" maLe
24V NEUTRAL
24V+
NeOTHerm NT 285-850
See DeTaIL D Or DeTaIL e
FIeLD WIre #14
(CUSTOmer) BOILer PUmP
reD 1/4" maLe
NeU +24VaC +120
BLr TB4
DK BLU/YeL
0-10VDC/ 4-20ma
aNaLOG INPUT
VFD (CUSTOmer)
BL/r #13
Br
BL/W
DeTaIL B TYPICaL TWO BUrNer BOILer CONFIGUraTION
6
NeOTHerm NT 1000
4 3 2 1 4 3 2 1 4-20ma(-) 2 TB5 TB4 0-10V (+) 3 PCB 0-10V (-) 4 DIJITIZeD
DK BL/YeL #9
TO PCB TB4-4
INLeT TemP SeNSOr 10K THermISTOr
2NDarY 2NDarY GaS VaLVe GaS VaLVe
TO PCB TB4-2
BK
PrImarY GaS VaLVe BL #11
BL/W
SeCONDarY GaS VaLVe
DeTaIL a TYPICaL TWO BUrNer BOILer CONFIGUraTION
HONeYWeLL J5-2 (PrI)
Bl/r #13
PrImarY GaS VaLVe
NeOTHerm NT 1700
HONeYWeLL J5-2 (SeC)
PrImarY GaS VaLVe TO PCB TB4-4
2NDarY 2NDarY GaS VaLVe GaS VaLVe TO PCB TB4-2
D
www.Laars.com PCB TB1-2 (+24V)
GaS VaLVe
7
TO PCB TB4-4
8
TO PCB TB4-2
THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN ARE PROPRIETARY TO LAARS HEATING SYSTEMS CO. AND SHALL NOT BE REPRODUCED, TRANSFERRED TO OTHER DOCUMENTS, USED OR DISCLOSED TO OTHERS FOR MANUFACTURING OR ANY OTHER PURPOSE EXCEPT AS SPECIFICALLY AUTHORIZED IN WRITING BY LAARS HEATING SYSTEMS CO.
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583 Headquarters: 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
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